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Showing 1 to 20 of 33 for “"Hollow Fibre"”.
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Polyacrylonitrile hollow fibre membranes for gas separation
Polyacrylonitrile (PAN) hollow fibres have been spun by a dry-jet wet spinning technique, using a commercial PAN polymer (Courtelle) redissolved in dimethylformamide (DMF). After failure to produce satisfactory porous hollow fibres from PAN/DMF solutions, a series of studies on the porous …
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Protein polarization in packed hollow fibre bioreactors
… retained in the extra capillary space (ECS) of hollow fibre bioreactors (HFBRs), can influence the hydrodynamics of such devices. A mathematical model was developed to describe the coupled hydrodynamics and high molecular weight protein transport in a cell filled HFBR. It was assumed that the …
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Sugarcane green ceramic hollow fibre membrane for oily wastewater separation
… work describes the preparation of green ceramic hollow fiber membranes derived from waste sugarcane bagasse ash (WSBA) using phase inversion and sintering techniques. The first step in the production of WSBA was the calcination process of sugarcane bagasse at 800 °C followed by characterization …
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The preparation and characterization of hollow fibre membranes for gas separation
… developed industrially for the preparation of hollow fibre membranes suitable for gas separation applications, has been reproduced on a laboratory scale. Polysulphone hollow fibres were spun from a variety of solvents and their gas transport properties were characterized using equipment built …
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Hollow fibre liquid phase microextraction of pharmaceuticals in water and Eichhornia crassipes
Submitted in fulfilment of the requirements for the Degree of Master of Applied Sciences in Chemistry, Durban University of Technology, Durban, South Africa, 2019.
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Production and characterisation of poly(vinyl chloride) (PVC) hollow fibre membranes for gas separation applications
… in the development of polyvinylchloride (PVC) hollow fibre membranes suitable for gas separation applications using the dry/wet phase inversion technique.The first part of this work involved the preparation of quaternary polymer solutions containing polyvinylchloride (PVC), dimethylacetamide …
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Improving the durability and performance of hollow fibre membranes with nanocomposite and inorganic/organic hybrid materials
Water is a vital element for our existence but secure supply is challenged by population pressures and climate change. To ensure water security, it is essential to explore new sources and to recycle water for non-potable applications to reduce demand for the more valuable potable water. Membranes …
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Studies On Copper Extraction With Hydroxyoxime Extractants For The Design Of Hollow Fibre Membrane Based Extraction Processes
… technique consisting of a microporous hollow fibre module was used in this study to examine the mass transfer properties of the extraction and stripping processes of copper across an immobilised interface system. The extraction and re-extraction (stripping) processes in this system were …
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The isolation and study of rheological and mass transfer parameters in the spinning of advanced hollow fibre membranes for gas separation
… time in the dry gap in dry/wet spinning of hollow fibre gas separation membranes. To achieve this, studies were undertaken in which extrusion shear and forced convection residence time were, for the first time de-coupled and studied in isolation. Much of the previous work in the literature …
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Comparison of two ultrafiltration membrane systems for whole milk feta cheese production : a thesis presented in partial fulfilment of the requirements for the degree of Master of Technology in Food Technology at Massey University, Auckland, New Zealand
… removal of water and small dissolved molecules. Hollow fibre and spiral wound ultrafiltration membranes are the two types of membranes that are commonly used for cheese production. An extensive amount of research exists on the implementation of ultrafiltration to improve the efficiency of the …
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Zur Frage der Stofftransporteigenschaften von Oxygenatorhohlfasermembranen bezüglich der Durchlässigkeit für Fluide und Narkosegase
Microporous hollow fibre membrane oxygenators with clinically-established polypropylene (PP) or innovative polymethylpentene (PMP) membranes are used clinically for cardiopulmonary bypasses (CPB) and extracorporeal life support (ECLS). Membrane oxygenators with silicone plates may also be used. …
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The Development of a Vascularly Implanted Prosthetic Endocrine Pancreas
… a centrally positioned acrylic copolymer hollow fibre (M.W. cut-off 100K Daltons), with a 10 cm polyethylene cannula attached at either end. Hollow fibre/cannula junctions were potted into the polyethylene shell via a disc of PVC tubing and U/V-cured dental adhesive. The secretory capagity …
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Naujų mikroekstrakcijos sistemų kūrimas, tyrimas ir taikymas lakių aromatinių angliavandenilių nustatymui /
… four liquid phase microextraction techniques – hollow fibre liquid phase microextraction, liquid phase microextraction based on the solidification of a floating drop, dispersive liquid-liquid microextraction and dispersion-solidification liquid-liquid microextraction – for the extraction of …
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Development, investigation and application of new microextraction systems for determination of volatile aromatic hydrocarbons /
… four liquid phase microextraction techniques – hollow fibre liquid phase microextraction, liquid phase microextraction based on the solidification of a floating drop, dispersive liquid-liquid microextraction and dispersion-solidification liquid-liquid microextraction – for the extraction of …
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Poly (2,6-dimethyl-1,4-phenylene oxide) hollow fibres for gas separation.
Hollow fibres used for gas separation applications need to have good mechanical strength and excellent gas separation properties. The production of hollow fibres by the dry-wet spinning process involves many variables, each having the potential to affect these properties. This is a systematic study …
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Theoretical and experimental investigation of membrane distillation
… for DCMD, influences of membrane structure (hollow fibre membrane) and pressure (compressible PTFE membrane) on membrane performance, and modelling the energy efficiency of DCMD with varied process parameters.
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Combined Hydrogen and Oxygen transport membranes in the activation of Methane
… CO oxidation on Pt using BCZY support, BCZY:CGO hollow fibre hybrid membrane was applied to the dehydrogenative conversion of methane with in-situ continuous removal of hydrogen in a hollow fibre catalytic membrane reactor (HFCMR). <br/><br/>This proved successful at 775OC, in a counter current …
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